Recurrent aphtus stomatitis (RAS) is an oral mucous lesion in patients with no other signs of disease. Investigators have always notified the role of immune system especially humoral immunity in aphtus immunopathogenesis. The aim of this case-controlled study was to measure amount of serum immonogiobulins (A,G,M) and complement component (C3 C4) in patients with RAS and to evaluate any relation...
